Thermo Scientific 49i, Instruction Manual, Page: 208 / 314

Servicing
Optical Bench Replacement
7-24 Model 49
i
Instruction Manual Thermo Fisher Scientific
1. Turn instrument OFF, unplug the power cord, and remove the cover.
2. Disconnect the ribbon cable and the two-wire connector from the front
panel board.
3. Remove the four screws at the corners of the LCD module.
4. Slide the LCD module out towards the right and rear of the instrument.
5. Replace the LCD module by following previous steps in reverse.
Optical Bench
Replacement
Use the following procedure to replace the optical bench ( Figure 7-11 ).
Equipment required:
Optical bench
Equipment Damage Some internal components can be damaged by small
amounts of static electricity. A properly grounded antistatic wrist strap must
be worn while handling any internal component.
Do not remove the panel or frame from the LCD module.
The LCD polarizing plate is very fragile, handle it carefully.
Do not wipe the LCD polarizing plate with a dry cloth, it may easily scratch
the plate.
Do not use alcohol, acetone, MEK or other Ketone based or aromatic
solvents to clean the LCD module, use a soft cloth moistened with a
naphtha cleaning solvent.
Do not place the LCD module near organic solvents or corrosive gases.
Do not shake or jolt the LCD module.